... for the HTML: :Mason: :Interp module in a recent release of Mason for details. Embedded Perl: % Lines and < %perl& gt; Blocks There are two ways to embed Perl code into text with Mason. The ... few lines of Perl code in a row, however, it is probably best to use a Perl block instead. A Perl block is equivalent to a bunch of Perl lines in a row. It begins with the start tag < %perl& gt; ... components contains a simple tag to do in- place substitution of Perl expressions, a way to mark a single line as being a line of Perl, and a set of block tags, most of which contain Perl code that...